The National Crime Victimization Survey (NCVS) Knowledge Corner provides quick tips and explanations for NCVS data users on a variety of topics. In this video, BJS Statistician Susannah Tapp, PhD, describes item nonresponse in the NCVS. Item nonresponse results in missing data. There are four missing data codes used in the NCVS: residue, out of universe, item invalid until, and item invalid after. She will discuss each missing data code in this video. For more information, please visit [ Ссылка ] or email us at askbjs@usdoj.gov.
